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CPPC: Probe for CPPC tables for each ACPI Processor object

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For each detected ACPI Processor object (ACPI0007), search its
device handle for CPPC specific tables (i.e. _CPC) and extract
CPU specific performance capabilities.

Signed-off-by: Ashwin Chaugule <[email protected]>
Reviewed-by: Al Stone <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Ashwin Chaugule 2015-09-09 16:27:07 -04:00 • committed by Rafael J. Wysocki
commit 4f2f757351
2 changed files with 20 additions and 0 deletions
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14
include/acpi/processor.h
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@ -311,6 +311,20 @@ phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
#ifdef CONFIG_ACPI_CPPC_LIB
extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
#else
static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
{
return 0;
}
static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
{
return;
}
#endif /* CONFIG_ACPI_CPPC_LIB */
/* in processor_pdc.c */
void acpi_processor_set_pdc(acpi_handle handle);